| Messages | Bytes | Average | Sending host |
| 57 | 578KB | 10KB | local |
| 33 | 250KB | 7757 | mx2.freebsd.org |
| 5 | 35KB | 7168 | smtp3.osuosl.org |
| 5 | 19KB | 3891 | mail-qv1-f74.google.com |
| 5 | 19KB | 3891 | mail-qv1-f73.google.com |
| 2 | 89KB | 45KB | ns2.nk.ca |
| 2 | 76KB | 38KB | mx0.slc.paypal.com |
| 2 | 13KB | 6656 | talvi.dovecot.org |
| 2 | 13KB | 6656 | smtp4.osuosl.org |
| 1 | 9325KB | 9325KB | mail-ed1-f54.google.com |
| 1 | 206KB | 206KB | o3612.abmail.students.udemy.com |
| 1 | 131KB | 131KB | mail-swedencentralazhn15013060.outbound.protection.outlook.com |
| 1 | 123KB | 123KB | mail-northcentralusazacs10203109.outbound.protection.outlook.com |
| 1 | 116KB | 116KB | mta236-176.sailthru.com |
| 1 | 111KB | 111KB | a13-84.smtp-out.amazonses.com |
| 1 | 102KB | 102KB | mta.communications.bestbuypromotions.ca |
| 1 | 99KB | 99KB | m244-11.mailgun.net |
| 1 | 99KB | 99KB | mta237-168.sailthru.com |
| 1 | 99KB | 99KB | pmta181-67.sailthru.com |
| 1 | 88KB | 88KB | mail-westus3azacs10201006.outbound.protection.outlook.com |
| 1 | 87KB | 87KB | mta.email.oldnavy.com |
| 1 | 85KB | 85KB | mail-westeuropeazhn15011022.outbound.protection.outlook.com |
| 1 | 82KB | 82KB | mta-70-150-123.sparkpostmail.com |
| 1 | 81KB | 81KB | o6.m.reply1.ebay.com |
| 1 | 78KB | 78KB | mta-70-150-149.sparkpostmail.com |
| 1 | 75KB | 75KB | mta-203-32-155.info.grammarly.com.sparkpostmail.com |
| 1 | 72KB | 72KB | bd77gez.bf03.hubspotemail.net |
| 1 | 68KB | 68KB | a15-12.smtp-out.amazonses.com |
| 1 | 65KB | 65KB | mail-qv1-f51.google.com |
| 1 | 59KB | 59KB | o2.ck.h.convertkit.com |
| 1 | 58KB | 58KB | o1264.abmail.email.theguardian.com |
| 1 | 56KB | 56KB | (mta.e.merrithew.com) |
| 1 | 55KB | 55KB | p-west3-cluster4-host6-snip4-3.eps.apple.com |
| 1 | 44KB | 44KB | gallifrey.nk.ca |
| 1 | 44KB | 44KB | uucp.nk.ca |
| 1 | 44KB | 44KB | ns2.nl2k.ab.ca |
| 1 | 43KB | 43KB | ccm198.constantcontact.com |
| 1 | 41KB | 41KB | mta-70-5-46.nhl.sparkpostmail.com |
| 1 | 38KB | 38KB | client.sunlife.ca |
| 1 | 37KB | 37KB | smtp-soi-g20-157.aweber.com |
| 1 | 36KB | 36KB | ccm177.constantcontact.com |
| 1 | 33KB | 33KB | mta5.cpro20.com |
| 1 | 28KB | 28KB | mta15.messages.classmates.com |
| 1 | 26KB | 26KB | (baf146cc133.iad1.oracleemaildelivery.com) |
| 1 | 25KB | 25KB | (adg154cb127.iad1.oracleemaildelivery.com) |
| 1 | 25KB | 25KB | o1.ptr4173.growveg.com |
| 1 | 23KB | 23KB | mta-out5.pod25.apne1.zdsys.com |
| 1 | 20KB | 20KB | o12.p10.mailjet.com |
| 1 | 20KB | 20KB | mail-eastusazon11022106.outbound.protection.outlook.com |
| 1 | 20KB | 20KB | mail-eastusazon11022111.outbound.protection.outlook.com |