Certified Email Service,
built for the entire conversation.
Track and certify the email that matters—when it matters. Keep using Outlook or Gmail as you normally do, and turn on CaseMail when important correspondence needs a documented record. Track activity, certify sent or received email, and keep the conversation, attachments, certificate history, and supporting evidence connected in one CaseMail record.
CERTIFY WHEN IT MATTERS
The email does not have to be certified upfront.
ORDINARY EMAIL
WHEN IT
MATTERS
- A Dispute?
- Need Proof?
- Time to Certify!
at any time.
CERTIFY WITH
CASEMAIL
Certify withCaseMail
Outlook or Gmail.
CONNECTED
CASEMAIL RECORD

Always at your fingertips.
What is CaseMail Certified Email?
CaseMail Certified Email is a certified email service that lets you track and certify important sent or received email using Outlook or Gmail without replacing your normal email environment. Certify correspondence when it matters—even if the original message was not sent as Certified Email—and keep the conversation, attachments, certification history, and related evidence connected for later review, verification, and recertification.
Send. Track. Certify when it matters.
Keep using Outlook or Gmail for everyday email. Turn on CaseMail when important correspondence needs tracking, certification, or a documented record. A message can be certified when it is sent, or sent or received correspondence can be certified later when the need arises.
SEND
Send Certified Email directly from Outlook or Gmail. Compose the email in the account you already use and activate CaseMail when you want to send it as Certified Email.
TRACK
Track important correspondence when you need a record of the activity. Track correspondence and certify it later when you choose.
CERTIFY
Certify the correspondence when it matters. Certify a sent or received email when you need a documented record—even if the original message was not sent as Certified Email.
Conversation changed? Recertify when needed.
When a certified conversation changes, revisit it and create a new certification while keeping prior certification history connected to the record.
Keep the important correspondence and its certified record connected.
When you choose to track or certify important correspondence, CaseMail keeps the related messages, attachments, certification history, and supporting evidence connected in one structured record—designed for later verification, authentication, review, and presentation.
The email that matters
Keep the important sent or received email and related conversation history connected to the CaseMail record.
- Original sent or received email
- Related messages
- Conversation history
Files stay with the correspondence
Keep attachments associated with the messages they belong to rather than separating them from the certified record.
- Associated attachments
- Related message context
- Connected record organization
A record that can evolve with the conversation
Keep the Certificate of Correspondence and prior certification history connected as a conversation changes and is recertified.
- Certificate of Correspondence
- Prior certification history
- User-driven recertification
Evidence connected to the record
Keep supporting message, event, metadata, and integrity-verification information associated with the certified correspondence for later review and verification.
- Message and event information
- Supporting metadata
- Integrity-verification information
From important email to a connected certified record.
Track and certify the correspondence when it matters, then keep the conversation, attachments, certification history, and supporting evidence connected instead of relying on an isolated receipt or email artifact.
CaseMail Certified Email vs. Other Certified Email Services
CaseMail gives you more control over when important email becomes part of a certified record.
Keep using Outlook or Gmail normally, track correspondence when needed, and certify a sent or received email when the communication becomes important.
The comparison below shows how CaseMail’s certification-on-demand approach differs from other Certified Email services that require certification to begin as part of the original sending process.
01When an Email Can Be CertifiedPRE-SEND / LIVE-ROUTING REQUIRED vs. CERTIFY WHEN SENDING OR LATER
Certification begins at the time of transmission.
The email must be sent through or initiated with the provider’s software, relay, gateway, routing address, API, add-in, or active mail-flow integration. If the original message bypasses that certification process, it generally cannot be certified afterward as that provider’s original certified transaction.
The original email does not have to be certified when it is first sent.
Correspondence already sent or received can be certified later when the record becomes important.
02Who Can Initiate CertificationSENDER-INITIATED TRANSACTION vs. SENDER OR RECIPIENT CAN CERTIFY
Certification is generally initiated by the sender when the sender chooses the provider’s certified-delivery workflow. A recipient who later receives an ordinary message that never participated in that workflow generally cannot turn the original historical transaction into that provider’s certified email record.
Important email can become certifiable from either side of the correspondence.
A CaseMail user can select email from Sent items or certify an original email received in the connected Inbox—even when the other party did not use CaseMail for the original message.
03Original Email Transmission PathPROVIDER IN THE TRANSMISSION WORKFLOW vs. KEEP THE NORMAL EMAIL ENVIRONMENT
Other services create their certification record by participating in the original send—through an add-in, SMTP relay, gateway, routing address, web application, API, or mail-flow rule. Their record is tied to technical events captured while the message passes through or is initiated by that provider-controlled workflow.
Continue using Outlook or Gmail as you normally do.
CaseMail does not require you to replace your normal email environment merely to preserve the ability to track or certify important correspondence.
04Existing Inbox & Historical CorrespondenceMISSED WORKFLOW = MISSED CERTIFICATION vs. CERTIFY EXISTING CORRESPONDENCE
If an email was sent and received outside the provider’s required certification path, other services do not document a mechanism that retroactively converts that ordinary historical message into the original certified transaction. The certification decision therefore has to be made before or during transmission.
Already sent or received can still matter.
Correspondence already available in a connected mailbox can be selected for certification after the fact, including an original received email in the user’s Inbox.
05Email Thread Continuity & RecertificationSINGLE-MESSAGE / STATIC RECEIPTS vs. THREAD-AWARE RECERTIFICATION
Other services primarily certify individual message transactions. When a negotiation, dispute, claim, or other conversation continues, later messages generate separate records rather than one evolving certified conversation with preserved prior certification states.
Revisit the conversation as it changes.
CaseMail’s model is user-driven: when a certified conversation is revisited, CaseMail can compare the current connected-mailbox conversation with the previously certified state, identify changes, and support a new certification while preserving certificate history.
06Proof of Content & AttachmentsSTRONG BUT TRANSACTION-BOUND vs. CONNECTED MESSAGE + ATTACHMENT RECORD
Leading certified-email providers can preserve message content and attachments and may use digital signatures, timestamps, cryptographic receipts, hashes, or provider-generated evidence files. Those records are typically created around the message transaction handled by that provider at send time.
Keep the correspondence and supporting files connected to the certification record.
CaseMail preserves email-thread data, attachments, metadata, and integrity-verification information within the supporting evidence record.
07Evidence Storage & Record RetentionRETENTION VARIES BY PROVIDER vs. DIGITAL EVIDENCE ARCHIVE
Retention models differ. Some providers require the sender to preserve the receipt or evidence file, while others maintain cloud storage for a defined term or as part of a paid plan. The certified receipt and the broader ongoing correspondence may remain separate records.
Maintain the supporting email evidence in a centralized CaseMail record.
The Digital Evidence Archive can organize email-thread data that includes messages, attachments, events, and certificates.
08Third-Party VerificationRECEIPT / PDF / PROVIDER-SPECIFIC VERIFICATION vs. LIVE ONLINE VERIFICATION
Verification methods vary. Some providers use signed PDFs, proprietary receipt files, or a verification email workflow. The reviewer may need the original receipt file, a PDF-signature check, or another provider-specific validation step.
Provide controlled online access to the certified record.
Private access can be shared with authorized third parties and revoked when required.
Turn important correspondence into a certified record you can review, verify, and present.
When correspondence is certified, the Certificate of Correspondence gives you a clear, human-readable certified record of the communication and connects it to the supporting evidence preserved by CaseMail for later verification, review, and presentation.
Together, Certified Email, the Certificate of Correspondence, and the Digital Evidence Archive create a more complete and verifiable evidentiary record than a standalone email artifact.
EXPLORE THE CERTIFICATE OF CORRESPONDENCE →The Certificate of Correspondence is the certified record. CaseMail’s proprietary Live Certificate technology keeps the current Certificate of Correspondence connected to the evolving conversation as the user recertifies it, while prior certification history remains associated with the record.
Preserve the deeper evidence behind the correspondence that matters.
The Digital Evidence Archive keeps messages, attachments, certification history, and supporting evidence together in one organized record for later review and verification.
When the correspondence needs certification, the supporting evidence remains connected to the certified record for later review and verification.
EXPLORE THE ARCHIVE →Instead of relying on a standalone email, screenshot, or isolated receipt, keep supporting communication evidence connected to the certified record for later review.
For teams that may not know an email will matter until after it arrives.
Not every email needs certification upfront. CaseMail gives teams the flexibility to keep using Outlook or Gmail normally, track important correspondence when needed, and certify a sent or received email later when it becomes important for a legal matter, claim, compliance review, investigation, audit, or customer record.
Legal
Certify correspondence when a routine exchange becomes important to a matter, dispute, notice, or case record.
Financial
Create a certified record when customer, transaction, claim, or compliance correspondence requires stronger documentation.
Healthcare
Certify selected administrative correspondence when the communication needs to become part of a documented record.
Government
Create certified records for selected correspondence when documentation, later review, or controlled access becomes important.
Certified Email FAQs
What is a Certified Email service?
A Certified Email service creates a documented record around important electronic correspondence. CaseMail lets you track and certify important email using Outlook or Gmail without replacing the email environment you already use.
Do I need to keep CaseMail connected to Outlook or Gmail continuously?
No. Activate CaseMail within Outlook or Gmail when you want to track or certify email. You do not need to keep CaseMail connected continuously.
Can I track an email before deciding to certify it?
Yes. Activate CaseMail within Outlook or Gmail to track correspondence, then certify it later when you choose.
How do I send a new Certified Email?
Compose the message in Outlook or Gmail as you normally would, then activate the CaseMail add-in when you want to send the message as Certified Email.
Can I certify an email after it has already been sent?
Yes. CaseMail lets you certify correspondence you already sent when the email later becomes important.
Can I certify an original email I received?
Yes. CaseMail can certify an original email you received, even when the sender did not use CaseMail and the message was not originally sent as Certified Email.
Why would I certify an email later?
You may not know when an ordinary email will become important. A routine exchange can later become relevant to a dispute, claim, investigation, audit, legal matter, customer record, or another situation where stronger documentation is useful. CaseMail lets you create the certified record when that need arises.
How is CaseMail different from other Certified Email services?
CaseMail gives you flexibility over when an email becomes part of a certified record. Keep using Outlook or Gmail normally, track important correspondence when needed, and certify sent or received email later when the communication becomes important.
What happens when a certified email conversation changes?
When a certified conversation changes, CaseMail can compare the current conversation with the previously certified state and support a new certification while preserving prior certificate history. Recertification is user-driven.
Where can I learn about proof of email delivery and the Certificate of Correspondence?
The Certificate of Correspondence page explains what the certified record contains and how it can be reviewed and verified.
Can CaseMail Certified Email be used as evidence in court?
Yes. Electronic records can be used as evidence, and CaseMail is designed to preserve the communication, attachments, supporting metadata, certification history, and integrity-verification information that can help support authentication and evidentiary review.
UETA, the federal ESIGN Act, and the Federal Rules of Evidence provide legal frameworks for electronic records and electronic evidence. CaseMail adds a structured, verifiable record around the communication so the evidence can be preserved, reviewed, verified, and presented when needed.
As with any evidence, admissibility in a particular matter is ultimately determined by the applicable law, facts, and court.
How do UETA and the ESIGN Act relate to Certified Email?
UETA-style state laws and the federal ESIGN Act generally recognize electronic records and electronic signatures rather than denying them legal effect solely because they are electronic. CaseMail helps preserve the communication and supporting evidence in a structured record designed for later verification, authentication, and evidentiary review.
Certify the email that matters—when it matters.
Keep using Outlook or Gmail as you normally do. Turn on CaseMail when important correspondence needs tracking, certification, or a documented record.
Outlook