diff --git a/database/message.go b/database/message.go
index c67f80b..e55c40a 100644
--- a/database/message.go
+++ b/database/message.go
@@ -18,7 +18,6 @@ package database
 
 import (
 	"context"
-	"fmt"
 	"strings"
 	"time"
 
@@ -62,10 +61,6 @@ const (
 		INSERT INTO message (conv_id, conv_receiver, id, mxid, mx_room, sender, timestamp, status)
 		VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
 	`
-	massInsertMessageQueryPrefix = `
-		INSERT INTO message (conv_id, conv_receiver, id, mxid, mx_room, sender, timestamp, status)
-		VALUES
-	`
 	updateMessageQuery = `
 		UPDATE message
 		SET conv_id=$1, mxid=$4, mx_room=$5, sender=$6, timestamp=$7, status=$8
@@ -75,6 +70,8 @@ const (
 	deleteMessageQuery       = "DELETE FROM message WHERE conv_id=$1 AND conv_receiver=$2 AND id=$3"
 )
 
+var massInsertMessageBuilder = dbutil.NewMassInsertBuilder[*Message, [3]any](insertMessageQuery, "($1, $2, $%d, $%d, $3, $%d, $%d, $%d)")
+
 func (mq *MessageQuery) GetByID(ctx context.Context, receiver int, messageID string) (*Message, error) {
 	return mq.QueryOne(ctx, getMessageByIDQuery, receiver, messageID)
 }
@@ -154,26 +151,12 @@ func (msg *Message) Insert(ctx context.Context) error {
 	return msg.qh.Exec(ctx, insertMessageQuery, msg.sqlVariables()...)
 }
 
+func (msg *Message) GetMassInsertValues() [5]any {
+	return [...]any{msg.ID, msg.MXID, msg.Sender, msg.Timestamp.UnixMicro(), dbutil.JSON{Data: &msg.Status}}
+}
+
 func (mq *MessageQuery) MassInsert(ctx context.Context, messages []*Message) error {
-	valueStringFormat := "($1, $2, $%d, $%d, $3, $%d, $%d, $%d)"
-	if mq.GetDB().Dialect == dbutil.SQLite {
-		valueStringFormat = strings.ReplaceAll(valueStringFormat, "$", "?")
-	}
-	placeholders := make([]string, len(messages))
-	params := make([]any, 3+len(messages)*5)
-	params[0] = messages[0].Chat.ID
-	params[1] = messages[0].Chat.Receiver
-	params[2] = messages[0].RoomID
-	for i, msg := range messages {
-		baseIndex := 3 + i*5
-		params[baseIndex] = msg.ID
-		params[baseIndex+1] = msg.MXID
-		params[baseIndex+2] = msg.Sender
-		params[baseIndex+3] = msg.Timestamp.UnixMicro()
-		params[baseIndex+4] = dbutil.JSON{Data: &msg.Status}
-		placeholders[i] = fmt.Sprintf(valueStringFormat, baseIndex+1, baseIndex+2, baseIndex+3, baseIndex+4, baseIndex+5)
-	}
-	query := massInsertMessageQueryPrefix + strings.Join(placeholders, ",")
+	query, params := massInsertMessageBuilder.Build([3]any{messages[0].Chat.ID, messages[0].Chat.Receiver, messages[0].RoomID}, messages)
 	return mq.Exec(ctx, query, params...)
 }
 
diff --git a/database/reaction.go b/database/reaction.go
index 643b7fd..09c935c 100644
--- a/database/reaction.go
+++ b/database/reaction.go
@@ -18,8 +18,6 @@ package database
 
 import (
 	"context"
-	"fmt"
-	"strings"
 
 	"go.mau.fi/util/dbutil"
 	"maunium.net/go/mautrix/id"
@@ -59,6 +57,8 @@ const (
 	deleteReactionQuery = "DELETE FROM reaction WHERE conv_id=$1 AND conv_receiver=$2 AND msg_id=$3 AND sender=$4"
 )
 
+var massInsertReactionBuilder = dbutil.NewMassInsertBuilder[*Reaction, [2]any](insertReactionQuery, "($1, $2, $%d, $%d, $%d, $%d)")
+
 func (rq *ReactionQuery) GetByID(ctx context.Context, receiver int, messageID, sender string) (*Reaction, error) {
 	return rq.QueryOne(ctx, getReactionByIDQuery, receiver, messageID, sender)
 }
@@ -93,24 +93,12 @@ func (r *Reaction) Insert(ctx context.Context) error {
 	return r.qh.Exec(ctx, insertReactionQuery, r.Chat.ID, r.Chat.Receiver, r.MessageID, r.Sender, r.Reaction, r.MXID)
 }
 
+func (r *Reaction) GetMassInsertValues() [4]any {
+	return [...]any{r.MessageID, r.Sender, r.Reaction, r.MXID}
+}
+
 func (rq *ReactionQuery) MassInsert(ctx context.Context, reactions []*Reaction) error {
-	valueStringFormat := "($1, $2, $%d, $%d, $%d, $%d)"
-	if rq.GetDB().Dialect == dbutil.SQLite {
-		valueStringFormat = strings.ReplaceAll(valueStringFormat, "$", "?")
-	}
-	placeholders := make([]string, len(reactions))
-	params := make([]any, 2+len(reactions)*4)
-	params[0] = reactions[0].Chat.ID
-	params[1] = reactions[0].Chat.Receiver
-	for i, msg := range reactions {
-		baseIndex := 2 + i*4
-		params[baseIndex] = msg.MessageID
-		params[baseIndex+1] = msg.Sender
-		params[baseIndex+2] = msg.Reaction
-		params[baseIndex+3] = msg.MXID
-		placeholders[i] = fmt.Sprintf(valueStringFormat, baseIndex+1, baseIndex+2, baseIndex+3, baseIndex+4)
-	}
-	query := strings.Replace(insertReactionQuery, "($1, $2, $3, $4, $5, $6)", strings.Join(placeholders, ","), 1)
+	query, params := massInsertReactionBuilder.Build([2]any{reactions[0].Chat.ID, reactions[0].Chat.Receiver}, reactions)
 	return rq.Exec(ctx, query, params...)
 }
 
diff --git a/go.mod b/go.mod
index f008d2a..f3bc0fd 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/rs/zerolog v1.32.0
 	github.com/skip2/go-qrcode v0.0.0-20200617195104-da1b6568686e
 	go.mau.fi/mautrix-gmessages/libgm v0.3.0
-	go.mau.fi/util v0.4.1
+	go.mau.fi/util v0.4.2-0.20240317181036-e3ab4975c61c
 	golang.org/x/exp v0.0.0-20240314144324-c7f7c6466f7f
 	google.golang.org/protobuf v1.33.0
 	maunium.net/go/mautrix v0.18.0
diff --git a/go.sum b/go.sum
index 1089590..026e3ae 100644
--- a/go.sum
+++ b/go.sum
@@ -60,8 +60,8 @@ github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
 github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
 github.com/yuin/goldmark v1.7.0 h1:EfOIvIMZIzHdB/R/zVrikYLPPwJlfMcNczJFMs1m6sA=
 github.com/yuin/goldmark v1.7.0/go.mod h1:uzxRWxtg69N339t3louHJ7+O03ezfj6PlliRlaOzY1E=
-go.mau.fi/util v0.4.1 h1:3EC9KxIXo5+h869zDGf5OOZklRd/FjeVnimTwtm3owg=
-go.mau.fi/util v0.4.1/go.mod h1:GjkTEBsehYZbSh2LlE6cWEn+6ZIZTGrTMM/5DMNlmFY=
+go.mau.fi/util v0.4.2-0.20240317181036-e3ab4975c61c h1:LnkEFlUnKcvCNzMDCT2sEuFOYi7zjF/HXvE4SnVrTZU=
+go.mau.fi/util v0.4.2-0.20240317181036-e3ab4975c61c/go.mod h1:GjkTEBsehYZbSh2LlE6cWEn+6ZIZTGrTMM/5DMNlmFY=
 go.mau.fi/zeroconfig v0.1.2 h1:DKOydWnhPMn65GbXZOafgkPm11BvFashZWLct0dGFto=
 go.mau.fi/zeroconfig v0.1.2/go.mod h1:NcSJkf180JT+1IId76PcMuLTNa1CzsFFZ0nBygIQM70=
 golang.org/x/crypto v0.21.0 h1:X31++rzVUdKhX5sWmSOFZxx8UW/ldWx55cbf08iNAMA=