Step-by-step guides for moving your sending to sendvia from Resend, Postmark, Mailgun or SendGrid: the same six steps in the same order, and what each move actually costs you.
Each guide below follows the same six steps in the same order: what you need, setting up Amazon SES and connecting it, moving the DNS records, swapping the API call, swapping the SMTP settings, then verifying and cutting over. Every guide also says plainly what you give up by moving, because a migration guide that only lists gains is not a guide anyone can plan against.
Most of the work is on the AWS side rather than anything sendvia-specific. Expect an account, an IAM user, and a production access request that Amazon reviews before you send anything at volume.
The parts that actually change are two DNS records, one API call and one SMTP host.
Migrate from Resend to sendvia covers all six steps, with the send call shown side by side in the same language.
The same AWS groundwork applies here too. What differs is the shape of the send call and where the message stream setting used to live.
Migrate from Postmark to sendvia covers all six steps, with the send call shown side by side in the same language.
This is the one route where a full switch is not always possible. sendvia has no inbound routing, so if anything on the domain receives mail, that half has to stay on the old side while outbound moves.
Migrate from Mailgun to sendvia covers all six steps for that outbound half. It also says exactly where the route stops, since sendvia does not receive mail on your behalf.
The AWS groundwork is the same again. The records step is the one to read closely if a registrar has been doing some of the work automatically until now.
Migrate from SendGrid to sendvia covers all six steps, with the send call shown side by side in the same language.
Every guide asks for the same things: an AWS account, an IAM user scoped to SES and SNS, and access to whoever manages the domain's records. A new SES account starts inside Amazon's sandbox, limited to email addresses you have verified individually, at up to 200 a day, until Amazon reviews the account, which usually takes 12 to 24 hours. Start that request first and use the wait for the rest of the setup.
None of the four guides promise a like-for-like swap. Read the "What you will lose by moving" section on the one you are following before you commit to a date, not after.
Compare email sending platforms prices sendvia against all four at several volumes and sets every feature against the other, with a source for each claim. Read that first if you have not chosen a provider to leave yet.